Oral appliance



FIG. 1 is a bottom perspective view of an oral appliance according to an exemplary embodiment of the present disclosure;

FIG. 2 is a top perspective view of the oral appliance of FIG. 1;

FIG. 3 is a right side view of the oral appliance of FIG. 1;

FIG. 4 is a left side view of the oral appliance of FIG. 1;

FIG. 5 is a front view of the oral appliance of FIG. 1;

FIG. 6 is a rear view of the oral appliance of FIG. 1;

FIG. 7 is a top view of the oral appliance of FIG. 1; and,

FIG. 8 is a bottom view of the oral appliance of FIG. 1. 

CLAIM The ornamental design for an oral appliance, as shown and described. 